DeRosa came out of Wednesday's game against the New York Mets after he doubled in the fifth inning. He has been wearing a large boot since then to stabilize his leg but ditched that on Friday and was able to ride a stationary bicycle.
"I'd really like to play Sunday if I can," DeRosa said. "Obviously, I'm not going to jeopardize not being able to play in the postseason. I'd like to see live at-bats. I know CC [Sabathia] is supposed to throw Sunday. I wouldn't mind a few at-bats, just to get timing. No one wants to sit for a week, but at the same time, I feel I shouldn't do anything to jeopardize not being out there Wednesday."
The Cubs, who clinched the National League Central last Saturday, open the postseason at Wrigley Field on Wednesday. Their opponent is still to be determined.
DeRosa, the most versatile Cub, said he doesn't have much experience with pulled muscles.
"It's just one of those things where there's no reason to rush trying to go out there," he said. "I'm not concerned about moving forward but at the same time, I'm not going to risk getting hurt."
He'd felt the pain in his left leg during the game before he doubled, but said it grabbed him after the hit. DeRosa has set career highs this season with 21 homers and 87 RBIs, and was batting .285.
Carrie Muskat is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.